Use the const keyword in C#. The const (read: constant) keyword in C# is used to define a constant variable, i.e., a variable whose value will not change during the lifetime of the program.

If a Java developer wants a variable to be constant, they mark that variable as final. A final variable in Java can't change once it's been assigned a value. For example, the ID of your bank account ...

Constant variables are vitally important to C++ coding, ... Note that once initialized, neither type of constants can change its value—they’re constant. For example: ...

For example, if two variables close variable A quantity that can take on a range of values. \(x\) and \(y\) are directly proportional to each other, ... The constant value (often written as \ ...